1/* 2 * Copyright (C) 2003-2005 SAN People 3 * 4 * Debugging macro include header 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 * 10*/ 11 12#define AT91_DBGU_SR (0x14) /* Status Register */ 13#define AT91_DBGU_THR (0x1c) /* Transmitter Holding Register */ 14#define AT91_DBGU_TXRDY (1 << 1) /* Transmitter Ready */ 15#define AT91_DBGU_TXEMPTY (1 << 9) /* Transmitter Empty */ 16 17 .macro addruart, rp, rv, tmp 18 ldr \rp, =CONFIG_DEBUG_UART_PHYS @ System peripherals (phys address) 19 ldr \rv, =CONFIG_DEBUG_UART_VIRT @ System peripherals (virt address) 20 .endm 21 22 .macro senduart,rd,rx 23 strb \rd, [\rx, #(AT91_DBGU_THR)] @ Write to Transmitter Holding Register 24 .endm 25 26 .macro waituart,rd,rx 271001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register 28 tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit 29 beq 1001b 30 .endm 31 32 .macro busyuart,rd,rx 331001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register 34 tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete 35 beq 1001b 36 .endm 37 38